GPT-5.5 (Medium) vs Grok 4.3 (Medium)

GPT-5.5 (Medium) vs Grok 4.3 (Medium). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

OpenAIGPT-5.5 (Medium)Off the frontier
Intelligence
33.80
Total cost
$2095
SpaceXAIGrok 4.3 (Medium)Not ranked · benchmark data missing
Intelligence
24.80
Total cost
-
Verdict

Comparison incomplete

A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

MetricGPT-5.5 (Medium)Grok 4.3 (Medium)Difference
Intelligence (higher is better)33.824.8−26.6% Grok 4.3 (Medium) is 26.6% less intelligent
Total AA cost (lower is better)$2,095.12Not reported— not comparable
End-to-end time (lower is better)9.73s20.48s+110.5% Grok 4.3 (Medium) is 110.5% slower
Price per 1M tokens (in / out)$5.00 / $30.0$1.25 / $2.50
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerGPT-5.5 (Medium): what beats itGrok 4.3 (Medium): what beats it
Matchup

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Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-5-medium/grok-4-3-medium · Markdown: /api/v1/compare/gpt-5-5-medium/grok-4-3-medium?format=md · llms.txt · agent skill